For Private Equity firms.
The European technology operating partner for US PE firms, from acquisition due diligence through to exit.
Supporting US PE Firms Across the Full Cross-Border Lifecycle
Pre-Deal DD
Technology and IT due diligence on UK and European targets designed for US investment committees. 4-6 weeks standard, 2-3 weeks for auction situations.
Hold-Period Support
Fractional CTO placement and periodic health checks in UK and European portfolio companies, giving US operating partners real technology visibility across the Atlantic.
Exit Preparation
Pre-sale technology audit that identifies what buyers will find and addresses it before the UK or European asset goes to market.
Buy-and-Build
Technology integration assessment across European acquisitions: platform consolidation, team restructuring, and architecture decisions across UK and continental targets.
Technology Leadership Across the Cross-Border Investment Lifecycle
US PE firms typically treat technology due diligence on European targets as a variation on their domestic process. It is not. The regulatory environment, talent market, contractor landscape, and engineering culture in UK and European technology businesses are materially different from US norms. Issues that would surface immediately in a US context can be invisible to an advisor without direct operating experience here.
Our advisory spans the full deal lifecycle -- pre-acquisition through exit -- with practitioners who have operated in UK and European technology businesses and understand the risks that cross-border deals actually create. For a deeper look at how technology creates value in PE-backed businesses, see our article on unlocking technology value in private equity.
Pre-Deal: Due Diligence That Informs Term Sheets
Our assessments are built for investment committees and designed to drive action. We evaluate across the 5P Framework (People, Process, Product, Protection, and Platform) and translate every finding into cost to fix, time to fix, and impact on the business plan. For cross-border deals, we add explicit commentary on UK and European regulatory posture wherever it affects the deal thesis. Our dedicated cross-border technology due diligence service covers the cultural, regulatory, and market context specific to transatlantic acquisitions.
What We Look For
Can the technology support the growth thesis? If the plan assumes doubling revenue in 3 years, can the platform handle it? In more than half our assessments, we find architecture decisions made at smaller scale that now constrain growth. Always fixable -- but the remediation cost and timeline must be reflected in the deal model.
Is the team capable of executing the plan? A team that performed well at the previous revenue level may lack the skills, structure, or leadership for the next. We assess composition, leadership quality, and key-person risk, frequently surfacing senior hires that belong in the value creation budget.
What has been hidden or misrepresented? CTOs have incentives to present favorably. We have the operational experience to distinguish between a team genuinely performing and one that is "saying the right words and making big promises" while the reality tells a different story.
What are the UK and European regulatory risks? FCA authorization, UK GDPR, IR35 contractor classification, and sector-specific data requirements can all represent material liability. We assess whether the company is genuinely compliant or has accumulated risk that will surface at exit.
How We Deliver
Standard due diligence runs 4-6 weeks. For auction situations, we compress to 2-3 weeks with findings delivered through structured verbal briefings. Every report includes an IC-ready executive summary, detailed assessment across all 5 pillars, a commercially quantified risk register, and a value creation roadmap.
"The platform everyone was calling 'cloud-native' was actually running on a single physical server in the CTO's garage. That finding changed the entire trajectory of the deal."
Hold-Period: Fractional CTO Placement and Technology Oversight
For US PE firms operating UK and European portfolio companies from across the Atlantic, the hold period is where distance creates real risk.
Fractional CTO Placement
When a portfolio company needs technology leadership -- whether the incumbent is underperforming, has left, or never existed at the required level -- we place an experienced CTO from our partner bench. Our fractional CTO services page explains how this works, including the dual reporting model these engagements require: operational accountability to the portfolio company CEO, strategic reporting to the US operating partner.
The typical arc: month one, stabilize the team and assess the real state of things. Months two to three, execute the initial roadmap and address structural DD findings. Months four to six, embed sustainable processes and either transition to a permanent CTO or extend. We build capability and design ourselves out.
Periodic Technology Health Checks
For portfolio companies that do not need ongoing CTO placement, we offer annual or semi-annual audits that track progress on DD recommendations, identify new risks, and benchmark technology maturity against the value creation plan -- giving US operating partners a structured view of European assets without requiring transatlantic travel.
Portfolio-Level Reporting
For firms wanting a consistent technology view across their European portfolio, we aggregate technology risk and performance across companies: identifying what is on track, what needs intervention, and where risk is concentrated.
Exit Preparation: Technology That Withstands Buyer DD
We know exactly what buyers look for because we conduct buy-side DD ourselves. We assess your portfolio company the way a buyer's advisors would, identify what they will find, and build a remediation plan before the asset goes to market.
Technical debt. Buyers distinguish between deliberate, well-understood debt and accumulated, undocumented debt. We help portfolio companies document it, quantify it, and demonstrate a credible management plan.
Key-person dependencies. If critical knowledge lives in one person's head, buyers will price it. We build the documentation, cross-training, and team structure to mitigate this before a buyer's advisor raises the flag.
Security and compliance gaps. UK GDPR, FCA requirements, and basic security hygiene are common findings that give buyers leverage in European asset sales. Straightforward to fix with sufficient lead time.
Architecture limitations. Platforms built for current scale that will not support the buyer's growth assumptions. The most expensive issue to remediate. Start this conversation 18 months before exit.
Buy-and-Build: Technology Integration Across European Acquisitions
US PE firms running buy-and-build strategies in Europe face a specific challenge: integrating multiple platforms, teams, and architectures spanning UK and continental markets, often with different regulatory obligations and technology stacks. This is where EBITDA accretion from operational synergies either materializes or does not.
We support buy-and-build at 2 levels. Pre-acquisition, we assess target technology with a specific lens: platform compatibility, integration costs for the deal model, and whether the team is additive or redundant. Post-acquisition, we lead or advise on integration: platform consolidation, team restructuring, and the architectural decisions that determine whether the combined entity captures the synergies that justified the deal. H.I.G. Capital has engaged us to support exactly this kind of complex buy-and-build consolidation across their European portfolio.
How We Work with US PE Firms
The Dual Reporting Model
For hold-period engagements, we operate with operational accountability to the portfolio company CEO and strategic reporting to the US operating partner. This gives US investors visibility into assets they cannot easily monitor from across the Atlantic without undermining local leadership. It works because we are genuinely independent -- our only objective is improving the technology function in ways that create value for both parties.
The Relationship Model
Our most productive relationships are ongoing advisory arrangements. The US operating partner has a European technology advisor who understands their portfolio, thesis, and standards -- so when a new European deal enters the pipeline, we move fast. With a bench of over 25 experienced CTOs and CPOs across the UK and Europe, we have the capacity to support multiple portfolio companies simultaneously and the sector breadth to match the right partner to each business.
Client Testimonials
"Rational Partners has established itself as a vital technical advisor to H.I.G. European Capital Partners. Their unique blend of agility and engineering heritage sets them apart. They move beyond standard 'red flag' reporting to deliver commercially focused, actionable strategies."
Frequently Asked Questions
Whether you need pre-deal technology DD on a UK acquisition target, a fractional CTO for a European portfolio company, or exit preparation that protects valuation, talk to a partner who understands the market.